Water-tube boiler.



No. 842,633. PATENTED JAN. 29, 1907.-

H. DEL MAR.

WATER TUBE BOILER.

APPLICATION FILED JULY 11, 1906.

WITNESSES:

1n: NORRIS PETERS cm. wasumqmu, n. c.

, UNirRn srA'rRs PATENT orrron HARRY DEL MAR, OF NEW YORK, N; Y.,Ass1oNoR TO BOILERS AND ENGIJ OF NEW JERSEY.

WATER-TUBE BOILER.

Specification of Letters Patent.

Patented Jan. 29, 1907.

Application filed July 11,1906. Serial No. 325.629.

To a whom it 7 7'l/CLZ/ concern:

Be it known that I, HARRY DEL MAR, of the city, county, and State of NewYork, have invented a new and Improved Tater- Tube Steam-Boiler, ofwhich the following is a full, clear, and exact description.

My invention relates to improvements in water-tube steam-boilers; andthe object of my invention is to produce a sectional water-tube boilerhaving tubes arranged in cross-sectional series diagonally opposed, incombination with a set of staggered tubes running between the lowerheaders, and to baflie the gases, so as to consume the prod ucts ofcombustion, reduce the temperature of the flue-gases, and produce steameconomically and rapidly. In carrying out this arrangement I furthermake the upper headers relatively wide, or double thewidth of the lowerheaders, so as to. admit of three rows of tubes, and the lower headersare partly straight and partly bent, so as to admit of a series of tubesin staggered relation, all to the end that an efficient and simpleboiler may be produced.

To these ends my invention consists of certain features of constructionand combinations of parts, which will be hereinafter described andclaimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a sectional end elevation of the boiler embodying invention.Fig. 2 is a broken side elevation of the same. Fig. 3 is a brokenvertical section at right angles to the view taken in Fig. 1, and Fig. 4is a detail of a preferred form of lower header.

The boiler is provided with a steam-drum 10, and its sides are formed,essentially, of the upper and lower headers 11 and 12, while at thecorners are the water-legs 13, which connect with the steam-drum by thedown flow-pipes 14. The upper headers 11 are relatively wide, so as toadmit of three rows of tubes, as shown in Fig. 2, and they connect withthe steam-drums by the tubes 15 and also by the inclined tubes 16, whichare arranged between the rows of tubes 17, and these are of thecross-sectional type and are diagonally arranged, so as to extend fromthe upper headers 11 to the lower opposed headers 12. Each lower header12 is straight on the sides at its upper part, and at the lower part itis serpentine or bent, as shown in Figs. 2 and 4 and preferably as inFig. 4, as this form of bend permits the cross-tubes 18 to be perfectlystaggered, so as to utilize all the rising heat. I

The boiler is provided with suitable muddrums 19 and 20, those shownbeing small; but obviously they may be large, and the rear mud-drum 20can be made large enough to take the place of the lower parts of theheaders 12, if desired. connected by the tubes 21, and they connect withthe headers above themby the tubes 22 and with the water-legs by thenipples 23. (See Fig. 2.)

Just above the tubes 18 is a baffle 24:, which extends across the boilerand for its full length, and this baflies the gases, so that they passinto the combustion-chamber 25 at one end of the boiler, from whichtheycan pass back between the upper tubes 16 and 17 and finally pass outthrough the stack 26.

It will be seen that this makesan arrangement in which the heat from theproducts of combustion is utilized to good advantage and that the boileris ofsimple construction for a water-tube boiler. The baffle can bedifferently arranged, if desired, and the baffie may be omitted withoutaffecting the invention, and likewise the bent or serpentine 'part ofthe header can be made in a difierent part, if preferred.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent 1. A cross-tube sectional boiler having upperand lower headers on each side of the boiler, an upper series 01cross-tubes, and a lower series of staggered tubes running parallel withthe cross-section series and from a point below the series ofcross-section tubes.

2. A cross-tube sectional boiler havin upper and lower headers on eachside 0 the boiler, cross-tubes connecting the upper headers to the upperparts of the lower headers opposite, and the lower part of the lowerheaders having bent or serpentine portions with tubes arranged in astaggered position therein, said tubes connecting the lower part of thelower headers on one side of the boiler with the lower part of the lowerheaders on the opposite side of the boiler.

3. A cross-tube sectional boiler having up 5 The mud drums are perheaders and upper cross-tubes, the latter arranged one directly over theother, in combination with a series of lower headers, each having thelower portion bent or serpentine and wlth cross-tubes arranged in astaggered position and connecting the lower parts of the lower headerson opposite sides of the boiler.

4. A boiler of the kind described having upper and lower headers onopposite sides of the boiler, the lower headers aving the upper halfwith tubes arranged in a single series one over the other, and the lowerhalf serpentine or corrugated, with the cross-tubes connecting saidserpentine portion, the said tubes being in staggered position.

5. In a boiler of the kind described, the

combination with the upper cross-sectional series of tubes and the lowerstaggered series of tubes, of the baflle between the upper and lowerseries.

6. In a boiler of the kind described, the

combination of an upper cross-sectional series with tubes arranged onedirectly over the other, with a lower series of staggered tubes, and thebaflie between the upper and lower series of tubes.

7. In a boiler of the kind described, a

- header having means for receiving a single series of tubes in itsupper portion, which is straight, and constructed to receive a doubleseries of tubes in staggered relation in its lower portion, said lowerportion being bent or serpentine,

8. In a boiler of the kind described, the combination of an upper seriesof cross-tubes, one directly over the other, a lower series of staggeredtubes beneath the said cross-tubes, a battle between the two series oftubes, and upper and lower headers on opposite sides of the boiler,connecting the upper and lower series of tubes.

HARRY DEL MAR. Witnesses:

W. B. I'IUTCHINSON, MARY A. S. MOELLER.

